Solar Masterplanning
Can 'Town Planning'
help to deliver
Passivhaus development?
Introductions
Brooks Devlin
Environmental Design Consultants
PH designers
Sustainability Masterplanning
Daylight/Sunlight Impact Analysis
BREEAM/CSH/SAP/ Thermal Bridge Modelling
SpaceStrategy
Architecture
Urban Design
Masterplanning
The phone call...
Beginnings
BIG QUESTION:
Can 'masterplanning' help deliver PH development?
Remember: UK approach is driven by our legislative processes.
So, does Town Planning play a measured part in reducing CO2 emissions?
How does a masterplan assist with PH compliance?
Solar gain is very important for PH compliance, how is this dealt with at the masterplanning stage?
Strands
• Is it simply 'Development Control vs Building Control'? Many see it this way...
• The PHPP approach – straddles the divide. Is this actually possible?
• What drives best practice.
UK:1992:GIR27: Passive Solar Estate Layout.
UK:1997/2012: BR 209: Daylight & sunlight impact assessments?
UK: SAP: Solar gain stranded near Sheffield
Next Steps
ENVIRONMENTAL SOLAR GAIN
Measure what Town Planning delivers!
It 'drives' measurable benefits – it saves using artificial energy, reduces CO2 and reduces cost of PH compliance.
• ESG needs to be modelled and measured accurately, robustly and simply at all levels.
• Measuring ESG requires software... ...that is only just 'practical‘ to use!
Climate Data
It is, clearly, dependent on the weather model?
We can use PHPP Climate Data.
Challenges from others; Met Office? CIBSE? Prometheus? SAP?
• Then there is probabalistic weather models taking into account future Climate Change(!)
...again, emerging data sets.
• ESG can be used to develop simple 'on site' comparisons; measured in KWh/m2
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A room with a view...
How do LPAs assess the masterplans put before them for solar gain? They can’t and don’t – too difficult pile!
Should they...?
• Germany (1991) GOSOL: Masterplanning software for optimising solar gain to DIN Standards.
• Germany (1998) Hamburg Urban Design Planning Policy optimising layout, orientation, etc.
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Postscript
TSB/Rationel funded software development – LightUp Analytics – BR209 daylight/sunlight modelling. www.lightup-analytics.com
Right to use PHI Solar modelling algorithms to match PHPP calculations
• Presentations at EcoBuild 2012, Urban Design Group, Room@RTPI, BRE, Plymouth University.
• Article published by the Good Homes Alliance
Postscript
Technical Paper proposal to PHT
Joint Policy paper on daylight/sunlight with UDG
• Applied Research Prospectus issued - awaiting funding
• Further software development (insolation modelling) funding prospectus issued - awaiting funding
Postscript
Plymouth City Council – very keen to develop policy and guidance in the ESG area
Plymouth University – new partnership with LUA working with Architecture
…an essential aspect of delivering low energy development in the UK & fully integrated with PH!
We think so!